a regular solid has dimensions of 3.20 cm by 4.90 cm by 5.40 cm. the mass of the solid is 235g. what is its density in g/cm3

When light energy excites electrons in photosystem II, where do the electrons to replace them come from?. .

sammy [17]

The answer is D) Split water molecules

Hope this helped

5 0

3 years ago

Read 2 more answers

Suppose a mutation affects an enzyme that is required to repair the damage to DNA caused by the loss of purine bases. This mutat

Vsevolod [243]

Answer: There's no way one species can become another through depuranization, which is a random change.

Explanation:

In cells, environmental (chemical or physical) and metabolic factors can cause DNA damage, which is the molecule that stores genetic material. In these cases, the damage done to the DNA is repaired.

Many of these lesions cause a permanent structural damage to the DNA, which can alter the ability to be transcribed, or can cause mutated genes to be transcribed resulting in another protein. Particularly, depurination is the hydrolytically cleavage of the β-N-glycosidic bond between the purines (adenosine or guanosine) and the carbon of the sugar group found in the DNA. This mutation results in the loss of the purine base and leads to the formation of apurinic site and results and severely disrupts the DNA structure. The most important causes of depurination is the presence of endogenous metabolites inside the cell as a result of various chemical reactions and due to the presence of mutagenic compounds. However, these apurinic sites are usually repaired by portions of the base excision repair (BER) pathway.

There's no way one species can become another through depuranization, which is a random change. Because it is highly unlikely that 5000 mutations are able to accumulate every day without being repaired, and that they are just the right mutations to have the same characteristics as a chimpanzee. If the depurinations are not repaired, the cell will most likely either die or become cancerous.

5 0

3 years ago

What type of passive transport specifically includes water traveling through a selectively permeable fembrane?

butalik [34]

Answer:

<h2>Osmosis</h2>

Explanation:

The movement of water across the semipermeable membrane is called osmosis.

The semipermeable or selectively permeable membrane allows only certain solutes to pass through the membranes and hinders other solutes. The water level is the same, but the concentration of the solutes is different on both sides of the membrane. So this passive transport of the water occurs to balance the concentration of solutes on both sides of the membrane.

6 0

3 years ago

Where is mitochondria found

AlexFokin [52]

Answer:

they are found throughout the cytoplasm of almost all eukaryotic cells

Explanation:

7 0

3 years ago

Hello please help me need aanswer

Murljashka [212]

$\bold{\huge{\underline{ Answers }}}$

<h3>Question :-</h3>

What else more you think about the benefits of a volcano and even it's wake

<h3>Answer 1 :- </h3>

As we all know and it is also mentioned in the above paragraph that volcanoes has some negative and positive impacts on mankind . The positive impacts mentioned in paragraph are fertile soil, pottery, spectacular secenery etc.
Some more benefits of volcanic eruption are :-

Indirectly it produces electricity . magma is generally found near the surface of earth which results in the generation of geothermal energy then this geothermal energy used for producing electricity
Magma of volcanoes contains very valuable minerals .
People are so curious about the natural phenomenon happens in the world. Volcanoes are also the one of the cause of curiosity and due to which it becomes a tourist spot. So in simple words , It contribute in the economy of countries.

<h3>Question :-</h3>

What I have learned?

<h3>Answer 2 :- </h3>

From above paragraph I learn that, Volcanic eruption have some positive as well as negative impacts on mankind but the negative impacts are the major reason of concern because volcanic eruptions are the cause of destruction of property, life ,earth etc.
People life's are more important than anything in the world because if we our alive only then we can get's the benefits of it.
Some people loss their relatives , migrated from their villages , loss their jobs and property etc. due to eruption of volcanoes.
During volcanic eruption, It is necessary to know that how can we protect our lives. For example if you are in a house then stay inside, Stay away from exposure of ash because it directly affecting your respiratory tract, If you are driving then stop your car near forests and closes all the glasses of the car and stop driving.
We should help the people those who are affected from volcanic eruption in every possible way by providing shelters, food, jobs etc.

<h3>Question 3 :-</h3>

What I still want to learn?

<h3>Answer 3 :-</h3>

Well ! There are so many things that I still have to learn but it is related to all kind of disasters facing by humans today.
The major cause of volcanic eruption is the climate change but the major of cause of the climate change are humans which is the greatest threat facing humanity today. Directly and Indirectly human activities are the causes of volcanic eruption.
So, It is necessary to know about the activities which causes volcanic eruption so that we all can minimize the effect of it.
Well, I am also curious about the positive impacts of volcanic eruption so that in future, by using advance technology I will find some preventive measures for people who lives in volcanic erupted areas and always concern about their lives . I hope , this future technology will become the reason of happiness of many people.
I don't know much about volcanic eruption so I still have to learn everything about it.

5 0

3 years ago

a regular solid has dimensions of 3.20 cm by 4.90 cm by 5.40 cm. the mass of the solid is 235g. what is its density in g/cm3​

a regular solid has dimensions of 3.20 cm by 4.90 cm by 5.40 cm. the mass of the solid is 235g. what is its density in g/cm3